/*

  * Copyright 1999-2002,2004 The Apache Software Foundation.

  * 

  * Licensed under the Apache License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at

  * 

  *      http://www.apache.org/licenses/LICENSE-2.0

  * 

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.apache.commons.latka.validators;   

 import org.apache.commons.latka.Validator;

 import org.apache.commons.latka.ValidationException;

 import org.apache.commons.latka.http.Response;

 import org.apache.log4j.Category;

 /**

  * @author Rodney Waldhoff

  * @author dIon Gillard

  * @version $Id: BaseValidator.java 155424 2005-02-26 13:09:29Z dirkv $

  */

 public abstract class BaseValidator implements Validator {

     // ----------------------------------------------------- Instance Variables 

     /** log4j category for debug output */

     protected final Category _log = Category.getInstance(BaseValidator.class);

     // ------------------------------------------------------- Abstract Methods

     /**

      * Validate a response

      * 

      * @param response the response to validate

      * @throws ValidationException 

      */

     public abstract void validate(Response response) throws ValidationException;

     protected String _label = null;

     // ----------------------------------------------------------- Constructors

     public BaseValidator() {

         this(null);

     }

     public BaseValidator(String label) {

         _label = label;

     }

     // ---------------------------------------------------------------- Methods

     public void setLabel(String label) {

         _label = label;

     }

     public String getLabel() {

         return _label;

     }

     protected void fail(String reason) throws ValidationException {

         throw new ValidationException(getLabel(),reason);

     }

 }